GB/T 25020.1-2025 Chinese PDF (GB /T25020.1-2025) GB 32047-2025 GB 17681-2024_Chinese: Technical specification for

GB 17681-2024_Chinese: Technical specification for safety monitoring of major hazard installations for hazardous chemicals (Chinese: 危险化学品重大危险源安全监控技术规范)

GB/T 22453-2025_Chinese: Non-linear optical crystal devices measuring method for laser (Chinese: 激光用非线性光学晶体元件性能测量方法)

GB/T 11067

English versions: GB/T 13748

GB/T 14478-2025_Chinese: Basic technical specification of inlet valves for large and medium-sized hydraulic turbines (Chinese: 大中型水轮机进水阀门基本技术规范)

GB/T 25020.1-2025 Chinese PDF (GB /T25020.1-2025) GB 32047-2025 GB 17681-2024_Chinese: Technical specification forGB T 25020. 1 2025_Chinese: Pole for overhead contact system of electrified railways Part 1: Steel pole (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25020. 1 2025